I've been having the issue with black screens intermittently since P4. Screen goes black for a couple seconds, then comes back. All's fine after that. Except just a bit ago, it did that then completely crashed, and with this whole 1017 business, that is just...not fun. Especially when you have people you are static leveling with who now have to twiddle thumbs or go craft or something until you slay the Login Boss.

My specs aren't top of the line, but:

i7 2600k @ 3.40 GHz
nVidia Geforce 460 GTX (EVGA branded) 1GB. Two of these, SLI enabled, but SLI isn't working in FFXIV because I'm still using 314.22.
Driver, as stated 314.22, because 320+ gives me random freezing issues in Firefox, weird cursors, deteriorated performance in GW2, and a blue screen here and there. I've tried several of them, they have all sucked. I am not attempting another upgrade until I hear from several sources that the things actually function and aren't going to melt something down. Because of this SLI isn't working in XIV, so all my load is on one card. So suggesting to upgrade them isn't much of an answer, unless nVidia has released one in the past 24 hours that I haven't yet given the chance to destroy my system.
8GB RAM
Windows 7 64 Bit
Yes, I got the update for the update that broke XIV's (and other games') videos.

It is worth noting, I've used 314.22 without a single black screen, blue screen, or game crash of any kind, since they came out. Excellent FPS and performance. Solid driver. This includes GW2, SWTOR, LotRO, Skyrim with graphical and lighting mods, Borderlands 2, etc etc. No issues. This black screen flickering is only happening in FFXIV despite the temps of the cards being the same as they are in any of my other games when at load.

When these crashes happen, I note in EVGA Precision that the card usage spikes abruptly from it's norm to 100%, and there are errors in Event Viewer about Process 4 requesting to disable Desktop Window Manager. On a whim I turned off Aero to see if this would stop the problems, but it didn't. My PC can handle Aero and gaming, it's done it for a couple of years now, but I tried it anyway. No dice. In fact after turning it off the game just slams to desktop when the black screens occur now. There are no errors that occur at the same time stating that the vid card drivers are actually resetting or failing, which I find odd, as this seems like a driver crash. From where I stand, especially given that these issues are happening across both AMD and nVidia and separate driver sets, this seems to be more a bug in the client than a problem with the hardware or drivers.